package com.chentongwei.spring.annotation.conditional.condition;

import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.context.annotation.Condition;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.core.env.Environment;
import org.springframework.core.type.AnnotatedTypeMetadata;

/**
 * @author TongWei.Chen 2018-07-04 11:05:05
 * @Description:
 * @Project spring-annonation
 */
public class LinuxCondition implements Condition {

    /**
     * ConditionContext：判断条件能使用的上下文（环境）
     * AnnotatedTypeMetadata：注释信息
     *
     * @param context: 判断条件能使用的上下文（环境）
     * @param metadata: 注释信息
     * @return
     */
    @Override
    public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {

        // 1.能获取到ioc使用的beanFactory
        ConfigurableListableBeanFactory beanFactory = context.getBeanFactory();

        // 2.获取类加载器
        ClassLoader classLoader = context.getClassLoader();

        // 3.获取当前环境信息
        Environment environment = context.getEnvironment();

        // 4.获取bean定义的注册类
        BeanDefinitionRegistry registry = context.getRegistry();

        String osname = environment.getProperty("os.name");

        if (osname.contains("Linux")) {
            return true;
        }

        return false;
    }
}
